CN217768001U - Nickel-chromium alloy grounding resistor - Google Patents

Abstract

The utility model discloses a nichrome ground resistor, including install bin, multi-disc resistance card, many connecting screw and two mounting panels that set up from top to bottom, the surface of install bin articulates there is sealing door, the multi-disc the resistance card is through many connecting screw and two mounting panel fixed mounting that set up from top to bottom, even fixed mounting has many gag lever posts between the upper and lower both sides internal surface of install bin, two that set up from top to bottom a plurality of through-holes have evenly been seted up to the surface of mounting panel, the gag lever post is inserted and is located the inner wall of through-hole and rather than slidable mounting, the surface fixed mounting that the install bin is close to its bottom has earth bolt. The utility model discloses a buffer spring that the install bin set up from top to bottom cushions the multi-disc resistance card between two mounting panels, and the vibrations of avoiding the install bin to receive produce the impact to the resistance card, influences the joint strength between resistance card and the connecting screw, can prolong the life of resistance card simultaneously.

Description

Nickel-chromium alloy grounding resistor

Technical Field

The utility model relates to an electric power electric wire netting technical field especially relates to a nichrome ground resistor.

Background

At present, the distribution network in China generally adopts a mode that a neutral point is grounded through a resistor to reduce single-phase grounding faults. At present, the grounding resistors adopted in the market are generally resistors made of nichrome metal sheets.

The existing nickel-chromium alloy grounding resistor is usually installed on electrical equipment for use in the using process, the electrical equipment can vibrate in the operating process, so that the nickel-chromium alloy grounding resistor can also vibrate therewith, and a nickel-chromium alloy metal sheet in the nickel-chromium alloy grounding resistor is easy to loosen in a long-time vibration environment, so that the grounding fault is generated.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the defects existing in the prior art and providing a nickel-chromium alloy grounding resistor.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

the utility model provides a nichrome ground resistor, includes install bin, multi-disc resistance card, many connecting screw and two mounting panels that set up from top to bottom, the surface of install bin articulates there is sealing door, the multi-disc the resistance card is through many connecting screw and two mounting panel fixed mounting that set up from top to bottom, even fixed mounting has many gag lever posts between the upper and lower both sides internal surface of install bin, two that set up from top to bottom a plurality of through-holes have evenly been seted up to the surface of mounting panel, the gag lever post is inserted and is located the inner wall of through-hole and rather than slidable mounting, the install bin is close to the fixed surface of its bottom and is installed ground bolt, the surface that the gag lever post is close to two mounting panels that set up from top to bottom is equipped with buffer gear.

As a further scheme of the utility model, two buffer spring of both ends surface about the gag lever post are located including the cover to buffer gear, two buffer spring sets up respectively between the upper and lower both sides internal surface of two mounting panels and install bin.

As a further scheme of the utility model, the surface and the fixed mounting that the install bin was run through to earthing bolt's one end have a conductive tube, one of them the bottom fixed mounting of connecting screw has a conducting rod, the conducting rod insert locate the inside of conducting tube and rather than slidable mounting.

As a further proposal of the utility model, a plurality of ventilation grooves have evenly been seted up to the surface of the relative both sides of install bin.

As a further scheme of the utility model, the install bin is close to the fixed surface of ventilation groove and installs the dust screen.

As a further proposal of the utility model, the inner wall fixed mounting that the current-conducting tube is close to its top has the sealing washer.

The utility model has the advantages that:

1. buffer spring through setting up from top to bottom of the install bin cushions the multi-disc resistance card between two mounting panels, and the vibrations of avoiding the install bin to receive produce the impact to the resistance card, influence the joint strength between resistance card and the connecting screw, prevent ground fault's production, can prolong the life of resistance card simultaneously.

2. The conducting rod is arranged at the bottom end of the connecting screw rod and is inserted into the conducting tube, so that when the mounting plate and the resistor disc integrally move up and down, the conducting rod can be always kept in a connection state with the conducting tube, and the electric connection between the electric equipment and the grounding bolt is prevented from being disconnected, and the occurrence of electric leakage accidents is avoided.

Drawings

Fig. 1 is a schematic diagram of an internal structure of a nichrome grounding resistor according to the present invention;

fig. 2 is a schematic view of a mounting plate structure of a nichrome grounding resistor provided by the present invention;

fig. 3 is an enlarged view of the structure at a in fig. 2.

In the figure: 1. installing a box; 2. a sealing door; 3. resistance cards; 4. mounting a plate; 5. connecting a screw rod; 6. a limiting rod; 7. a through hole; 8. a buffer spring; 9. a conductive rod; 10. a conductive tube; 11. a ground bolt; 12. and (4) ventilating slots.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.

It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.

Examples

Referring to fig. 1-3, a nichrome grounding resistor, including the install bin 1, the multi-disc resistance card 3, many connecting screw 5 and two mounting panels 4 that set up from top to bottom, connecting screw 5 passes through wire and external electrical equipment electric connection, the surface of install bin 1 articulates there is sealing door 2, multi-disc resistance card 3 through many connecting screw 5 with two mounting panels 4 fixed mounting that set up from top to bottom, even fixed mounting has many gag lever posts 6 between the upper and lower both sides internal surface of install bin 1, the surface of two mounting panels 4 that set up from top to bottom has evenly seted up a plurality of through-holes 7, gag lever post 6 inserts the inner wall of locating through-hole 7 and installs rather than sliding, the fixed surface of install bin 1 near its bottom installs ground bolt 11, gag lever post 6 is equipped with buffer gear near the surface of two mounting panels 4 that set up from top to bottom.

In this embodiment, buffer gear is including two buffer spring 8 of the both ends surface about the gag lever post 6 is located to the cover, and two buffer spring 8 set up respectively between the upper and lower both sides internal surface of two mounting panels 4 and install bin 1.

In this embodiment, one end of the grounding bolt 11 penetrates through the outer surface of the installation box 1 and is fixedly provided with the conductive tube 10, the bottom end of one of the connection screws 5 is fixedly provided with the conductive rod 9, and the conductive rod 9 is inserted into the conductive tube 10 and is slidably mounted with the conductive tube 10.

In this embodiment, a plurality of ventilation grooves 12 have evenly been seted up to the surface of the relative both sides of install bin 1, are convenient for dispel the heat to resistance card 3.

In this embodiment, installation box 1 is close to the fixed surface of ventilation groove 12 and is installed the dust screen, prevents that external dust from entering into installation box 1 in, avoids the dust adhesion on resistance card 3, influences resistance card 3's performance.

In this embodiment, the inner wall of the conductive tube 10 near the top end thereof is fixedly provided with a sealing ring, so as to prevent external dust from entering between the conductive tube 10 and the conductive rod 9 and affecting the conductive effect between the conductive tube 10 and the conductive rod 9.

From the above description, it can be seen that the above-mentioned embodiments of the present invention achieve the following technical effects: the plurality of resistance sheets 3 and the vertically arranged mounting plates 4 are limited by the plurality of limiting rods 6, and the buffer springs 8 are arranged on the outer surfaces of the two ends of the limiting rods 6, so that when the mounting box 1 is vibrated by external machines, the vertically arranged buffer springs 8 can buffer the plurality of resistance sheets 3 between the two mounting plates 4, the situation that the vibration applied to the mounting box 1 impacts the resistance sheets 3 to influence the connection strength between the resistance sheets 3 and the connecting screw rods 5 is avoided, the generation of ground faults is prevented, and meanwhile, the service life of the resistance sheets 3 can be prolonged; the conducting rod 9 is arranged at the bottom end of the connecting screw rod 5, and the conducting rod 9 is inserted into the conducting tube 10, so that when the mounting plate 4 and the resistor disc 3 integrally move up and down, the conducting rod 9 can always keep a connection state with the conducting tube 10, the occurrence of electric leakage accidents caused by the fact that the electrical connection between the electrical equipment and the grounding bolt 11 is disconnected is avoided, the specific connection mode and the working principle of a plurality of electrical equipment components are well known technologies in the field, and redundant description is omitted here.

For ease of description, spatially relative terms such as "over 8230," "upper surface," "above," and the like may be used herein to describe the spatial positional relationship of one device or feature to other devices or features as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if a device in the figures is turned over, devices described as "above" or "on" other devices or configurations would then be oriented "below" or "under" the other devices or configurations. Thus, the exemplary terms "at 8230; \8230; 'above" may include both orientations "at 8230; \8230;' above 8230; 'at 8230;' below 8230;" above ". The device may be otherwise oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.

It should be noted that the terms "first," "second," and the like in the description and claims of this application and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the application described herein are, for example, capable of operation in sequences other than those illustrated or otherwise described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (6)

1. The utility model provides a nichrome ground resistor, includes install bin (1), multi-disc resistance card (3), many connecting screw (5) and two mounting panel (4) that set up from top to bottom, the surface of install bin (1) articulates there is sealing door (2), the multi-disc resistance card (3) through many connecting screw (5) and two mounting panel (4) fixed mounting that set up from top to bottom, its characterized in that, even fixed mounting has many gag lever posts (6) between the upper and lower both sides internal surface of install bin (1), two that set up from top to bottom a plurality of through-holes (7) have evenly been seted up to the surface of mounting panel (4), inner wall and rather than slidable mounting of locating through-hole (7) are inserted in gag lever post (6), install ground bolt (11) near the surface fixed mounting of its bottom in install bin (1), the surface that two mounting panel (4) that set up about gag lever post (6) are close to is equipped with buffer gear.

2. The nichrome grounding resistor of claim 1, characterized in that the buffer mechanism comprises two buffer springs (8) sleeved on the outer surfaces of the upper and lower ends of the limiting rod (6), and the two buffer springs (8) are respectively arranged between the two mounting plates (4) and the inner surfaces of the upper and lower sides of the mounting box (1).

3. The nichrome grounding resistor of claim 1, characterized in that one end of the grounding bolt (11) penetrates through the outer surface of the installation box (1) and is fixedly provided with a conductive tube (10), wherein the bottom end of one of the connecting screw rods (5) is fixedly provided with a conductive rod (9), and the conductive rod (9) is inserted into the conductive tube (10) and is slidably mounted with the conductive tube.

4. The nichrome grounding resistor of claim 1, characterized in that the outer surface of the opposite sides of the installation box (1) is uniformly provided with a plurality of ventilation slots (12).

5. A nichrome earth resistor according to claim 4, characterised in that a dust screen is fixedly mounted to the outer surface of the installation box (1) near the ventilation slot (12).

6. A nichrome earth resistor according to claim 3, characterised in that the conducting tube (10) is fixed with a sealing ring near its top end inner wall.

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